Maven使用Cargo实现自动化部署

由于公司配置的垃圾台式机，根本就没法开发，开一个sts，跑一个内嵌的tomcat就卡出翔，测试每次想在我机器上测试，所以弄了下maven下使用Cargo实现自动化部署，这样就可以把本地的应用部署到远程服务器上去，省的垃圾电脑卡出翔。

先在settings.xml里面的pluginGroups节点增加org.codehaus.cargo以便命令行调用，然后增加server

	tomcat7x
	admin
	password

1.部署到本地Web容器

1.1 standalone模式

 在standalone模式，Cargo会从Web容器的安装目录复制一份配置到用户指定的目录，然后在此基础上部署应用，每次重新构建的时候，这个目录都会被清空，所有配置被重新生成

 
	org.codehaus.cargo
	cargo-maven2-plugin
	1.4.9
	
		
			tomcat7x
			/usr/local/devtools/apache-tomcat-7.0.55
		
		
			standalone
			${project.build.directory}/tomcat7x
			
				
				8088
			
		
	

然后用mvn cargo:run启动，关于cargo:run于cargo:start有什么区别，后续会讲到。

1.2 existing模式

在existing模式下，用户需要指定现有的web容器配置目录，然后Cargo会直接使用这些配置并将应用部署到其对应的位置

	org.codehaus.cargo
	cargo-maven2-plugin
	1.4.9
	
		
			tomcat7x
			/usr/local/devtools/apache-tomcat-7.0.55
		
		
			existing
			/usr/local/devtools/apache-tomcat-7.0.55
		
	

然后运行cargo:run之后在对应的tomcat的webapps目录下能够看到被部署的应用

2.部署到远程Web容器

这里注意在远程部署模式下，container元素的type子元素的值必须为remote，如果不指定，Cargo会默认使用installed，并寻找对应的容器安装目录或者安装包，一般我们远程部署的服务器上都有设定好的web容器了，并不需要再区安装。

pom.xml

	org.apache.tomcat.maven
	tomcat7-maven-plugin
	2.2
	
		http://localhost:8080/manager/text
		UTF-8
		tomcat7x
		admin
		password
		/${project.artifactId}
	

	org.codehaus.cargo
	cargo-maven2-plugin
	1.4.9
	
		
			tomcat7x
			remote
		
		
			runtime
			
				http://localhost:8080/manager/text
                admin
                password
            
		
        
                      
                io.steveguoshao  
                webapp  
                war  
                  
                    /${project.artifactId}
                  
                
                http://localhost:8080/webapp
                
				60000
            
        
	
	
		
			verify-deployer
			install
			
				deployer-redeploy
			
		
		
			clean-deployer
			clean
			
				deployer-undeploy
			
		  
	  

在tomcat7的conf/tomcat-users.xml中增加角色和用户， 不然会报403，没法访问

另外还有一点要注意的是url,tomcat7是

http://localhost:8080/manager/text

而tomcat6是

http://localhost:8080/manager/html

配置好之后就可以运行mvn cargo:redeploy 来部署应用了（必须保证tomcat是running状态，否则没法部署），如果容器中已经部署的当前应用，Cargo会先卸载掉原来的应用，然后再重新部署。

为什么在配置了

deployer-undeploy

的时候，明明刚刚install的时候已经生成了，但是却每次clean都报找不到target目录下war包呢？

3.Cargo插件中各个命令的之间的异同

Goals	Description
cargo:start	Start a container. That goal will: If the plugin configuration requires so, installs the container. If the plugin configuration defines a container with a standalone local configuration, it will create the configuration. If the plugin configuration contains one or more deployables, it will deploy these to the container automatically. If the plugin configuration contains no deployables but the project's packaging is Java EE (WAR, EAR, etc.), it will deploy the project's deployable to to the container automatically. And, of course, start the container. Note: A container that's started with cargo:start will automatically shut down as soon as the parent Maven instance quits (i.e., you see a BUILD SUCCESSFUL or BUILD FAILED message). If you want to start a container and perform manual testing, see our next goal cargo:run.
cargo:run	Start a container and wait for the user to press CTRL + C to stop. That goal will: If the plugin configuration requires so, installs the container. If the plugin configuration defines a container with a standalone local configuration, it will create the configuration. If the plugin configuration contains one or more deployables, it will deploy these to the container automatically. If the plugin configuration contains no deployables but the project's packaging is Java EE (WAR, EAR, etc.), it will deploy the project's deployable to to the container automatically. And, of course, start the container and wait for the user to press CTRL + C to stop.
cargo:stop	Stop a container.
cargo:restart	Stop and start again a container. If the container was not running before calling cargo:restart, it will simply be started.
cargo:configure	Create the configuration for a local container, without starting it. Note that the cargo:start and cargo:run goals will also install the container automatically (but will not call cargo:install).
cargo:package	Package the local container.
cargo:daemon-start	Start a container via the daemon. Read more on: Cargo Daemon Note: The daemon:start goal is actually equivalent to a restart in CARGO's terms; in the case a container with the same cargo.daemon.handleid already exists then it will be stopped first before your container is started. This also implies that in the case the new container fails to start, the old one will not be restarted.
cargo:daemon-stop	Stop a container via the daemon. Read more on: Cargo Daemon
cargo:deployer-deploy (aliased to cargo:deploy)	Deploy a deployable to a running container. Note: The cargo:start and cargo:run do already deploy the deployables specified in the configuration to the container; as a result calling cargo:deploy for a container which has been started by CARGO in the same Maven2/Maven3 project will most likely cause a second deployment of the same deployables (and might even fail).
cargo:deployer-undeploy(aliased to cargo:undeploy)	Undeploy a deployable from a running container.
cargo:deployer-start	Start a deployable already installed in a running container.
cargo:deployer-stop	Stop a deployed deployable without undeploying it.
cargo:deployer-redeploy(aliased to cargo:redeploy)	Undeploy and deploy again a deployable. If the deployable was not deployed before calling cargo:deployer-redeploy (or its alias cargo:redeploy) it will simply be deployed.
cargo:uberwar	Merge several WAR files into one.
cargo:install	Installs a container distribution on the file system. Note that the cargo:start goal will also install the container automatically (but will not call cargo:install).
cargo:help	Get help (list of available goals, available options, etc.).

从上面可以看出，cargo:start于cargo:run的不同之处了吧？cargo:start的生命周期依赖于maven实例的生命周期，也就是说，maven构建成功或者失败之后，cargo插件的生命周期也自动停止了；而cargo:run不同，不管maven是否构建成功或者失败，都必须手工去按Ctrl + C来停止。

参考资料：

1.徐文斌的《Maven实战》

2.http://cargo.codehaus.org/Maven2+Plugin+Reference+Guide

3.http://cargo.codehaus.org/Maven2+plugin

4.http://cargo.codehaus.org/Deploying+to+a+running+container